Q: What experimental te determine the concer
A: Spectrometry: it is used to find out the structure and mass of the given compound. Calorimetry…
Q: IS
A: [HCl] = 0.0075 M HCl ----> H+ + Cl-
Q: Choose the correct statement.
A: Matter is defined as anything which is having mass and occupies space Matter mainly existed in…
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A: Thermodynamics: It is a branch of physical chemistry which deals about various forms of energies…
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A: This is addition reaction. First one is chlorination . Second one is hydrogenation.
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A: We need to balance the reaction, C2H4+O2→CO2+H2O
Q: when do sulfur and iron change their physical properties?
A: When iron and sulphur reacts, they form a compound iron sulphide (FeS)
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A: (a) Statement 1 is true . XeF2 does not follow the octet rule. (b) statement 2 is false SF4 exits…
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A: Given :- values are : 1.4 × 105 51000 3.5 × 10-2 9.0 × 10-6 7.9 × 10-6 To arrange :- the…
Q: One of the following statements is incorrect:
A: "Standardization is required" when the titrant solution molarity is approximate.
Q: Identify the following statements as true or false, AND give a reason why (a few key words only).
A:
Q: It can be more than one
A: 1. Combination reactions : In which two or more substances combine to form a single new substance…
Q: If the height or mass of an object is increased, its ____ energy will increase.
A: On increasing the height of the mass ,it's potential energy will increase
Q: All of the following statements are true EXCEPT
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Q: A AH corresponds to an, process.
A: Heat of reaction : At particular temperature, the amount of heat released or absorbed during a…
Q: Which is incorrect?
A:
Q: Determine if each statement is true or false
A: triple bond consist 2 pi and 1 sigma.
Q: Write C if Statements a and b are correct H if both statements are incorrect…
A: The freezing point depression is the difference in the freezing points of the solution from the pure…
Q: (Several choices may be correct.)
A: Addition of Br2(BROMINATION) of alkene (-C=C-) yields a dibromo compound
Q: at to do: lace a clean, white coupon bo: eave it for five days fter five days, observe it
A: Coupon bond paper- It is a paper mainly used in documents, such as government bonds.
Q: is
A: We have to carry out the given transformation by sulfonium ylide. The reaction is shown below
Q: What would happen to the ratio?
A: PH of a solution = - log [H+] From the relation we can say that pH of solution is inversely…
Q: The temperature at which the motion of particles theoretically stops.
A: Kinetic molecular theory states that the temperature of a substance is related to the average…
Q: the symbol for the state its in
A: Recall the given reaction, 3 Cl2 g + 2 Cr3+ aq + 14 OH- aq → 6 Cl- aq +…
Q: the kinetic energy of particles
A: The kinetic energy of the Gas is greater than the kinetics of liquid, greater is the kinetic energy…
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A: 5) Typically, if we have pure product from a reaction, percent yields are understandably less than…
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A: Option a) is false. option b, c , d are true. When a number of moles of gas in a reaction…
Q: nswer all parts of this question.
A: Hofmann elimination: Hofmann elimination of an amine , this reaction starts with methylation of…
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A: The solution is given below-
Q: Which
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Q: hoose each item that is wrong about the following statement:
A: 1 sentence is correct. It has 8 alpha helics rather than 7. Sentence 2 is correct. It is connected…
Q: ich of the owving for foll
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Q: It has been dete of energy during
A: Given the amount of heat generated by our body during 1 hour of exercise = 5500 kJ / 1 hour The heat…
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A: The question is about true or false.
Q: Is this correct? refer to the red numbers and words.
A: This table is not totally correct, it is partially correct. In row 1 that is for the Beryllium, the…
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A:
Q: 3. What can you determine about
A:
Q: , calculate their efficiencies. Round your answers in
A:
Q: Decide whether the statement is TRUE OR FALSE. Justify your answer.
A: 1)False Introns are spliced out after transcription only exons, coding part go on with mature mRNA.…
Q: What is AL
A: ANSWER IS DISCUSSED BELOW :
Q: How many must be reflected
A: Photon flux is to be calculated Pressure = FORCE/AREA FORCE = Change in Momentum/ Change in time…
Q: Define physical property and provide examples.
A: The characteristics of a substance can be identified using physical or chemical properties. When the…
Q: Be detailed
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A: Statement 1- A 2.0 % NaCl solution has a higher vapor pressure than pure water. when a non-volatile…
Q: The following picture represents..
A: Elements When substance is made of only one kind of atoms and cannot be broken into simpler type of…
Q: (23.4813 x 2.52) + 374.99 > View Available Hint(s) ΑΣΦ 407 Submit Previous Answers
A:
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- These organic solvents are used to clean compact discs:(a) If a 15.00-mL sample of CD cleaner weighs 11.775 g at 20C, which solvent is most likely to be present?(b) The chemist analyzing the cleaner calibrates her equipment and finds that the pipet is accurate to 0.02 mL, and the balance is accurate to 0.003 g. Is this equipment precise enough to dis-tinguish between ethanol and isopropanol?Mr. Roy, the principal of a reputed school organized a seminar in which he invited parents and principals to discuss the serious issue of diabetes and depression in students. They all resolved this issue by strictly banning the junk food in schools and to introduce healthy snacks and drinks’like soup, lassi, milk, etc. in school canteens. They also decided to make compulsory half an hour physical activities for the students in the morning assembly daily. After six months, Mr. Roy conducted the health survey in most of the schools and discovered a tremendous improvement in the health of students. After reading the above passage, answer the following: What are the values (at least two) displayed by Mr. Roy? As a student, how can you spread awareness about this issue? What are tranquilizers? Give an example. Why is the use of aspartame limited to cold foods and drinks?Which of the following given statements is false? 1. The electrical conductivity of water is dependent on the temperature of the water sample. Removal of suspended particles by sedimentation depends upon the size and specific gravity of those particles. Suspended solids retained on a filter may remain in suspension if their specific gravity is similar to water while very dense particles passing through the filter may settle. Sodium hydroxide and sodium chloride are both bases. 2. In a sedimentation process, the solid particles settled at the bottom of the container because they are heavier than water and are acted upon by gravity. In the process of distillation, the condenser helps in the conversion of the vapor that goes inside it into liquid. After filtering a mixture using a filter paper, there is more solute at the bottom of the container compared to the contents of the filter paper. In the reaction between dry ferrous sulfate and dry potassium ferricyanide, no change is observed.…
- TRUE OR FALSE __________ 6. The bowl of the funnel for gravity filtration may be filled to the brim. __________ 7. Transfer liquids and solutions from a reagent bottle or beaker with the aid of a stirring rod. __________ 8. Never touch, taste, or smell a chemical unless specifically told to do so. __________ 9. If uncertain as to how to dispose of a chemical, dumping it into the sink followed by copious amount of water is a safe disposal procedure. __________ 10. A centrifuge machine should be balanced with an even number of centrifuge/test tubes, placed across the rotor from one another, with equal volumes of liquid.You were in the middle of a tropical rainforest and it is very humid in the environment. Do you have a glass of pure water that you have left outside for two days. Nothing has come to drink it and it has not rained either for those two days you measure the amount of water in the glass after these two days and it is exactly the same volume that was present two days before answer 22-25You will observe granules of sugar, salt, and pepper under a magnifying glass (if available, if not some Android phones also have a magnifying glass feature, but you need to turn it on for it to work. To turn on the magnifying glass, go to Settings, then Accessibility, then Vision, then Magnification and turn it on. When you need to use the magnifying glass, go to the camera app and tap the screen three times.), and observe the similarities and differences between these common materials. Questions: • Can you see the difference between the sugar and salt granules? • Which of the substances appear to be made of crystals?
- You will observe granules of sugar, salt, and pepper under a magnifying glass (if available, if not some Android phones also have a magnifying glass feature, but you need to turn it on for it to work. To turn on the magnifying glass, go to Settings, then Accessibility, then Vision, then Magnification and turn it on. When you need to use the magnifying glass, go to the camera app and tap the screen three times.), and observe the similarities and differences between these common materials. Guide questions for students: • Can you see the difference between the sugar and salt granules? Can you see the different angles? • Are there angles in the pepper? Does it look crystalline? Questions: 1. Which of the substances appears to be made of crystals? 2. Defend your answer with evidence from your observation. What did you use to help you decide which are crystals, and which are not?Dust falls on Chicago at a rate of 65 mg m-2 day-1. Major metallic elements in the dust include aluminum, copper, lead, magnesium, manganese and zinc. Lead accumulates at a rate of 0.029 mg m-2 day-1. How many metric tons (1 metric ton = 1000 kg, an exact equality) of lead fall on the 535 km2 of Chicago in one year?You take a representative soil sample and determine the following data: Exchangeable cation cmolc/kg of soil Ca2+ 2.7 Mg2+ 1.0 K+ 0.1 H+ 1.0 Al3+ 2.8 Na+ 0.1 1) What is the CEC (cmolc/kg ) of this soil?
- What is Donnan's theory? What is its importance in biophysical chemistry?(A) if both sentences are true, (B) if both sentences are false, (C) if the first sentence is true but the second is false, and (D) if the first sentence is false but the second is true. 1. Water appears in nature in all three common states of matter. Water is a tasteless, odorless liquid at standard temperature and pressure. 2. The addition of salt in the distilling mixture made the water impure and saline. The addition of 5 drops of the silver nitrate solution into the distillate determines whether the distillate is impure or pure water. 3. The ideal electrical conductivity of totally pure water is 0.055 microSiemens, whereas typical deionized water has an electrical conductivity of 0.1 microSiemens. The freezing point of water at 1 atm is 100degC. 4. From the air, oxygen can slowly diffuse across the water’s surface from the surrounding atmosphere, or be mixed in quickly through aeration, whether natural or man-made. The aeration of water can be caused by wind (creating waves),…TRUE OR FALSE 1. Examples of personal protective equipment includes lab coats, long pants, closed shoes and prescription glasses. __________ 2. Thick calibrated glassware like graduated cylinders and volumetric flasks can be heated directly and will not break easily. __________ 3. Larger spills of hazardous liquid on the skin and clothes require immediate use of safety shower. __________ 4. If you get chemicals in the eye, you should flush them with water for 5 minutes only. __________ 5. Flammable materials, like alcohol, should never be dispensed or used near an open flame.